Thani Oruvan

A low-level party cadre Sengalvarayan rushes to a political meeting just as his wife goes into labor. Tamizhvanan, the regional leader, lends his car to take her to the labour ward. The baby is born in the car, marking the first thread of a long, intertwined fate.

Tamizhvanan commits a caste-tinted killing of a rebel at the party office, jolting the political landscape. Pazhani agrees to take prison time in exchange for an MLA seat for Sengalvarayan in the upcoming by-elections. This sacrifice catalyzes Sengalvarayan’s rise to MLA and sets the stage for future power plays.

A group of trainee IPS officers—Mithran, Shakthi, Suraj, Kathiresan, and Janardhan—work covertly to foil a kidnapping ring targeting four young women. Their path crosses Mahima, a forensic pathologist and Mithran’s former partner, who reveals a broader pattern of corruption behind the crimes. The encounter pushes Mithran to probe deeper into a system slipping under political influence.

The team confronts the murder of social activist Raman, a crime tied to powerful backers who profit from illegitimate gains. When they arrest the gang and hand their leader to authorities, the political landscape remains volatile, and four days later the gang leader walks into the IPS headquarters with the Home minister. This moment exposes how influence can bend justice at the highest levels.

Mithran uncovers a conspiracy involving Siddharth Abhimanyu, a scientist, who collaborates with three powerful patrons—Ashok Pandian, Charles Chelladurai, and Perumal Swamy—to profit from medicines and experiments. The scheme reveals illicit trials and hidden motives driving public health decisions. The scope of corruption expands beyond a single crime to a systemic problem.

Angelina, a Swiss pharmaceutical executive advocating affordable generics, is killed by Siddharth's assassin before a pivotal agreement can be signed. Mithran becomes a direct target as the investigation tightens around Siddharth’s circle. The murder signals the depth of the pharmaceutical‑political nexus at play.

While recovering in the hospital, Siddharth deploys an electronic bug—GPS and audio transmitters—hidden during surgery to monitor Mithran’s every move. The device begins revealing Siddharth’s wider scheme and the hidden faces of power backing him. Mithran grows increasingly cautious as the net tightens.

Manimekalai, a scientist from Siddharth’s lab, records crucial evidence on an SD card before she is killed by Siddharth’s agents. Vicky, Perumal Swamy’s brother, is tasked with retrieving the card, and Jana is killed in the struggle when Mithran’s team intervenes. The investigation becomes intensely personal as witnesses fall.

A pin bearing Ananya’s image raises suspicions that Siddharth orchestrated events at Mithran’s premises. Mahima connects the fingerprints to a gun case from Mithran’s earlier posting, triggering a flashback where Siddharth killed Shilpa’s father to win her alliance. The past crime explains present loyalties and betrayals.

Mithran locates and removes the bug, captures Vicky, and persuades Siddharth to kill him, removing one of Siddharth’s key assets. A medical report is altered to favor public welfare while clandestinely accusing Tamizhvanan, creating political pressure on Sengalvarayan. The pursuit tightens around Siddharth’s operations.

A state funeral for Sengalvarayan is staged as Tahmlovar’s machinery moves to seize control. Mithran continues his pursuit, seeking accountability for Siddharth and his allies within a volatile political landscape. The event shows how ritual and power are used to manipulate justice.

Siddharth is arrested, revealing that the medicine had been patented in Manimekalai’s name, threatening patent status and profits. Sengalvarayan is revealed to be alive, saved by Mithran’s team, and Jana’s staged funeral is exposed. Mithran offers a dangerous deal: save Siddharth’s life in exchange for full cooperation and the SD card’s damning contents, which remain hidden in a vest, ensuring that the truth has a personal cost.